<!--
 * @Description: 我的购物车页面组件
 * @Author: hai-27
 * @Date: 2020-02-20 01:55:47
 * @LastEditors: hai-27
 * @LastEditTime: 2020-02-27 13:36:42
 -->

<template>
    <div class="shoppingCart" v-if="showPage">
        <!-- 购物车头部 -->
        <div class="cart-header">
            <div class="cart-header-content">
                <p>
                    <i class="el-icon-shopping-cart-full" style="color:#ff6700; font-weight: 600;"></i>
                    我的购物车
                </p>
                <span>温馨提示：产品是否购买成功，以最终下单为准哦，请尽快结算</span>
            </div>
        </div>
        <!-- 购物车头部END -->

        <!-- 购物车主要内容区 -->
        <div class="content" v-if="getShoppingCart.length>0">
            <ul>
                <!-- 购物车表头 -->
                <li class="header">
                    <div class="pro-check">
                        <el-checkbox v-model="isAllCheck">全选</el-checkbox>
                    </div>
                    <div class="pro-img"></div>
                    <div class="pro-name">商品名称</div>
                    <div class="pro-price">单价</div>
                    <div class="pro-num">数量</div>
                    <div class="pro-total">小计</div>
                    <div class="pro-action">操作</div>
                </li>
                <!-- 购物车表头END -->

                <!-- 购物车列表 -->
                <li class="product-list"
                    v-for="item in this.$store.getters.getShoppingCart.slice((this.currentPage-1)*this.pageSize,this.currentPage*this.pageSize)"
                    :key="item.cartId">
                    <div class="pro-check">
                        <el-checkbox :value="item.isCheck" @change="checkChange($event,item.cartId)"></el-checkbox>
                    </div>
                    <div class="pro-img">
                        <router-link :to="{ path: '/goods/details', query: {productID:item.product.id} }">
                            <el-image :src="picUrl+item.product.img"/>
                        </router-link>
                    </div>
                    <div class="pro-name">
                        <router-link
                                :to="{ path: '/goods/details', query: {productID:item.product.id} }"
                        >{{item.product.name}}
                        </router-link>
                    </div>
                    <div class="pro-price">{{item.product.price}}元</div>
                    <div class="pro-num">
                        <el-input-number
                                size="small"
                                v-model="item.count"
                                :min="1"
                                :max="100"
                                @change="handleChange(key)"
                        ></el-input-number>
                    </div>
                    <div  class="pro-total pro-total-in">{{item.product.price*item.count}}元</div>
                    <div class="pro-action">
                        <el-popover placement="right">
                            <p>确定删除吗？</p>
                            <div style="text-align: right; margin: 10px 0 0">
                                <el-button
                                        type="primary"
                                        size="mini"
                                        @click="deleteItem($event,item.cartId)"
                                >确定
                                </el-button>
                            </div>
                            <i class="el-icon-error" slot="reference" style="font-size: 18px;"></i>
                        </el-popover>
                    </div>
                </li>
                <!-- 购物车列表END -->
            </ul>
            <!--分页导航-->
            <div class="block">
                <el-pagination
                        layout="prev, pager, next"
                        :total="total"
                        prev-text="上一页"
                        next-text="下一页"
                        :page-size="pageSize"
                        :current-page="currentPage"
                        @size-change="handleSizeChange"
                        @current-change="handleCurrentChange">
                </el-pagination>
            </div>
            <div style="height:20px;background-color: #f5f5f5"></div>

            <!-- 购物车底部导航条 -->
            <div class="cart-bar">
                <div class="cart-bar-left">
          <span>
            <router-link to="/goods">继续购物</router-link>
          </span>
                    <span class="sep">|</span>
                    <span class="cart-total">
            共
            <span class="cart-total-num">{{getNum}}</span> 件商品，已选择
            <span class="cart-total-num">{{getCheckNum}}</span> 件
          </span>
                </div>
                <div class="cart-bar-right">
          <span>
            <span class="total-price-title">合计：</span>
            <span class="total-price">{{getTotalPrice}}元</span>
          </span>
                    <router-link :to="getCheckNum > 0 ? '/confirmOrder' : ''">
                        <div :class="getCheckNum > 0 ? 'btn-primary' : 'btn-primary-disabled'">去结算</div>
                    </router-link>
                </div>
            </div>
            <!-- 购物车底部导航条END -->
        </div>
        <!-- 购物车主要内容区END -->

        <!-- 购物车为空的时候显示的内容 -->
        <div v-else class="cart-empty">
            <div class="empty">
                <h2>您的购物车还是空的！</h2>
                <p>快去购物吧！</p>
            </div>
        </div>
        <!-- 购物车为空的时候显示的内容END -->
    </div>
</template>
<script>
    import {mapActions, mapGetters} from "vuex";

    export default {
        inject:['reload'],
        data() {
            return {
                picUrl:'',
                showPage: false,
                shoppingCarts: [],
                cart: {
                    cartId: 0,
                    productId: 0,
                    count: 0,
                    totalPrice: 0,
                },
                total: 0, // 商品总量
                pageSize: 5, // 每页显示的商品数量
                currentPage: 1, //当前页码

            };
        },
        created(){
            this.picUrl="http://localhost:8102/upload/";
            this.total= this.$store.getters.getShoppingCart.length;
            this.initPage();
        },
        watch:{
            currentPage(){
                this.shoppingCarts = this.$store.getters.getShoppingCart.slice((this.currentPage-1)*this.pageSize,this.currentPage*this.pageSize);
            }
        },
        methods: {
            ...mapActions(["updateShoppingCart", "deleteShoppingCart", "checkAll"]),
            // 修改商品数量的时候调用该函数
            initPage(){
                this.showPage = true;
            },
            handleChange(key) {
                // 当修改数量时，默认勾选
                this.updateShoppingCart({key: key, prop: "isCheck", val: true});
                let newShoppingCart = this.$store.getters.getShoppingCart;
                // 向后端发起更新购物车的数据库信息请求
                this.$axios({
                    method: 'post',
                    url: "/api/shoppingCart/updateShoppingCart",
                    data: newShoppingCart,
                    contentType: "application/json"
                }).then(res => {
                        switch (res.data.code) {
                            case 200:
                                // “200”代表更新成功
                                // 更新vuex状态
                                this.updateShoppingCart({
                                    key: key,
                                    prop: "num",
                                });
                                // 提示更新成功信息
                                // this.notifySucceed(res.data.msg);
                                break;
                            default:
                                // 提示更新失败信息
                                this.notifyError(res.data.msg);
                        }
                    })
                    .catch(err => {
                        return Promise.reject(err);
                    });
            },
            checkChange(val, key) {
                // 更新vuex中购物车商品是否勾选的状态
                this.updateShoppingCart({key: key, prop: "isCheck", val: val});
            },
            // 向后端发起删除购物车的数据库信息请求
            deleteItem(e, id) {
                this.$axios
                    .post("/api/shoppingCart/deleteShoppingCartById", this.$Qs.stringify({
                        cartId: id
                    }))
                    .then(res => {
                        switch (res.data.code) {
                            case 200:
                                // “001” 删除成功
                                // 更新vuex状态
                                this.deleteShoppingCart(id);
                                this.shoppingCarts = this.$store.getters.getShoppingCart.slice((this.currentPage-1)*this.pageSize,this.currentPage*this.pageSize);
                                // 提示删除成功信息
                                this.notifySucceed(res.data.msg);
                                break;
                            default:
                                // 提示删除失败信息
                                this.notifyError(res.data.msg);
                        }
                    })
                    .catch(err => {
                        return Promise.reject(err);
                    });
            },
            handleCurrentChange(current) {
                this.currentPage = current;
            },
            handleSizeChange(size) {
                this.page.size = size;
            }
        },
        computed: {
            ...mapGetters([
                "getShoppingCart",
                "getCheckNum",
                "getTotalPrice",
                "getNum"
            ]),
            isAllCheck: {
                get() {
                    return this.$store.getters.getIsAllCheck;
                },
                set(val) {
                    this.checkAll(val);
                }
            }
        }
    };
</script>
<style scoped>
    .shoppingCart {
        background-color: #f5f5f5;
        padding-bottom: 20px;
    }

    /* 购物车头部CSS */
    .shoppingCart .cart-header {
        height: 64px;
        border-bottom: 2px solid #ff6700;
        background-color: #fff;
        margin-bottom: 20px;
    }

    .shoppingCart .cart-header .cart-header-content {
        width: 1225px;
        margin: 0 auto;
    }

    .shoppingCart .cart-header p {
        font-size: 28px;
        line-height: 58px;
        float: left;
        font-weight: normal;
        color: #424242;
    }

    .shoppingCart .cart-header span {
        color: #757575;
        font-size: 12px;
        float: left;
        height: 20px;
        line-height: 20px;
        margin-top: 30px;
        margin-left: 15px;
    }

    /* 购物车头部CSS END */

    /* 购物车主要内容区CSS */
    .shoppingCart .content {
        width: 1225px;
        margin: 0 auto;
        background-color: #fff;
    }

    .shoppingCart .content ul {
        background-color: #fff;
        color: #424242;
        line-height: 85px;
    }

    /* 购物车表头及CSS */
    .shoppingCart .content ul .header {
        height: 85px;
        padding-right: 26px;
        color: #424242;
    }

    .shoppingCart .content ul .product-list {
        height: 85px;
        padding: 15px 26px 15px 0;
        border-top: 1px solid #e0e0e0;
    }

    .shoppingCart .content ul .pro-check {
        float: left;
        height: 85px;
        width: 110px;
    }

    .shoppingCart .content ul .pro-check .el-checkbox {
        font-size: 16px;
        margin-left: 24px;
    }

    .shoppingCart .content ul .pro-img {
        float: left;
        height: 85px;
        width: 120px;
    }

    .shoppingCart .content ul .pro-img img {
        height: 80px;
        width: 80px;
    }

    .shoppingCart .content ul .pro-name {
        float: left;
        width: 380px;
    }

    .shoppingCart .content ul .pro-name a {
        color: #424242;
    }

    .shoppingCart .content ul .pro-name a:hover {
        color: #ff6700;
    }

    .shoppingCart .content ul .pro-price {
        float: left;
        width: 140px;
        padding-right: 18px;
        text-align: center;
    }

    .shoppingCart .content ul .pro-num {
        float: left;
        width: 150px;
        text-align: center;
    }

    .shoppingCart .content ul .pro-total {
        float: left;
        width: 120px;
        padding-right: 81px;
        text-align: right;
    }

    .shoppingCart .content ul .pro-total-in {
        color: #ff6700;
    }

    .shoppingCart .content ul .pro-action {
        float: left;
        width: 80px;
        text-align: center;
    }

    .shoppingCart .content ul .pro-action i:hover {
        color: #ff6700;
    }

    /* 购物车表头及CSS END */

    /* 购物车底部导航条CSS */
    .shoppingCart .cart-bar {
        width: 1225px;
        height: 50px;
        line-height: 50px;
        background-color: #fff;
    }

    .shoppingCart .cart-bar .cart-bar-left {
        float: left;
    }

    .shoppingCart .cart-bar .cart-bar-left a {
        line-height: 50px;
        margin-left: 32px;
        color: #757575;
    }

    .shoppingCart .cart-bar .cart-bar-left a:hover {
        color: #ff6700;
    }

    .shoppingCart .cart-bar .cart-bar-left .sep {
        color: #eee;
        margin: 0 20px;
    }

    .shoppingCart .cart-bar .cart-bar-left .cart-total {
        color: #757575;
    }

    .shoppingCart .cart-bar .cart-bar-left .cart-total-num {
        color: #ff6700;
    }

    .shoppingCart .cart-bar .cart-bar-right {
        float: right;
    }

    .shoppingCart .cart-bar .cart-bar-right .total-price-title {
        color: #ff6700;
        font-size: 14px;
    }

    .shoppingCart .cart-bar .cart-bar-right .total-price {
        color: #ff6700;
        font-size: 30px;
    }

    .shoppingCart .cart-bar .cart-bar-right .btn-primary {
        float: right;
        width: 200px;
        text-align: center;
        font-size: 18px;
        margin-left: 50px;
        background: #ff6700;
        color: #fff;
    }

    .shoppingCart .cart-bar .cart-bar-right .btn-primary-disabled {
        float: right;
        width: 200px;
        text-align: center;
        font-size: 18px;
        margin-left: 50px;
        background: #e0e0e0;
        color: #b0b0b0;
    }

    .shoppingCart .cart-bar .cart-bar-right .btn-primary:hover {
        background-color: #f25807;
    }

    /* 购物车底部导航条CSS END */
    /* 购物车主要内容区CSS END */

    /* 购物车为空的时候显示的内容CSS */
    .shoppingCart .cart-empty {
        width: 1225px;
        margin: 0 auto;
    }

    .shoppingCart .cart-empty .empty {
        height: 300px;
        padding: 0 0 130px 558px;
        margin: 65px 0 0;
        background: url(../assets/imgs/cart-empty.png) no-repeat 124px 0;
        color: #b0b0b0;
        overflow: hidden;
    }

    .shoppingCart .cart-empty .empty h2 {
        margin: 70px 0 15px;
        font-size: 36px;
    }

    .shoppingCart .cart-empty .empty p {
        margin: 0 0 20px;
        font-size: 20px;
    }

    /* 购物车为空的时候显示的内容CSS END */
</style>
